How to display two different parts of one image in two windows?

Question

hi everyone:) i need to display two different parts of one image in two windows. i have problem with displaying :/ because after creating windows there aren't any images :( i supose my initialization code of creating windows is incomplete, maybe i miss something or maybe there is some inconistency. graphics in java is not my strong position. complete code is below. can anybody help me?
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
import java.util.*;
class ImgFrame extends JFrame
       private BufferedImage img;
       ImgFrame(BufferedImage B_Img, int x, int y, int w, int h)
               super("d");
               img=new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);
               img=B_Img.getSubimage(x, y, w, h);
       }//end ImgFrame construction
       public void paint(Graphics g)
               Graphics2D g2D = (Graphics2D)g;
               g.drawImage(img, 8, 8, null);
       }//end paint method
       public Dimension getPrefferedSize()
               if(img==null)
                       return(new Dimension(100,100));
               else
                       return(new Dimension(img.getWidth(null),img.getHeight(null)));
       }//end of GetPrefferedSize method
}//end ImgFrame class
public class TestGraph2D_03 extends Component
       static BufferedImage IMG;
       public static void Load()
               try
                       IMG=ImageIO.read(new File("c:/test.bmp"));
               catch(IOException ioe)
                       System.out.println("an exception: "+ioe);
               }//end try catch
       }//end TestGraph2D_03 construction
       public static void main(String[] args)
               Load();
               ImgFrame F1 = new ImgFrame(IMG, 0, 0, 8, 8);
               ImgFrame F2 = new ImgFrame(IMG, 8, 8, 8, 8);
               F1.addWindowListener(new WindowAdapter()
                       public void windowClosing(WindowEvent e)
                               System.exit(0);
               F1.pack();
               F1.setVisible(true);
               F2.addWindowListener(new WindowAdapter()
                       public void windowClosing(WindowEvent e)
                               System.exit(0);
               F2.pack();
               F2.setVisible(true);
       }//end of main method in TestGraph2D_01 class
}//end of TestGraph2D_03 class

Answer 1

Never override the paint(...) method of a Swing component.
If you have a sub image then add the image to a JLabel and add the label to the GUI. No need for custom painting.